If you’re running Zabbix in Docker, and you see the Database error “Too many connections”, edit your docker-compose.yml as follows: Under the mysql-server section under volumes, add the following volume:…
Solve Zabbix “Too many connections”
How to create Raid 1 in Ubuntu 24.04 server setup
During the installation process, when arriving at the disk setup, select Custom storage layout
Remove node stuck in Promox GUI
After you’ve removed a node from a Proxmox cluster, the node often still shows in the Proxmox GUI. The fix is quite simple – ssh into one of the remaining…
RBD operations to external Ceph cluster from Proxmox
Previously we used Ceph which was tightly bundled with Proxmox, and this worked really well. The trouble comes in when you need to update Proxmox and reinstall etc. Then you’re…
Monitor Ceph (reef) with Zabbix
The guides on the Zabbix and Ceph websites explain in different ways how to monitor Ceph with Zabbix, but neither of the guides are complete and work out the box….
Get CSF and Docker working together
Although CSF has built in functionality to work with Docker, this is definitely not sufficient if you have multiple Docker containers and bridges. The other problem is that Docker manages…
Get Intel X520 SFP+ card working Proxmox/Debian
The Intel X520 has a built in list of support SFP+ transceivers. We are using generic modules which have very good ratings and have never given us any issues. The…
Ceph – distribute data evenly in near full pool
Sometimes when a pool or an OSD is nearful in Ceph, rebalancing tends to stop and you end up with a Ceph cluster in a warn state. The following couple…
Delete all files in Backblaze bucket – terminal
Before being able to delete a bucket in Backblaze b2, you need to delete all the files within the bucket. If you have a lot of files in the bucket,…
Cephadm host check failed – removed host
If you’ve recently removed a host and your cluster displays as being in an error state with the following error: cephadm is trying to connect to a host which has…